Western Bulldogs assistant coach Steven King has been charged with drink-driving.

Police have charged Western Bulldogs assistant coach Steven King with drink-driving the day after their AFL practice match against Geelong.

It is understood King was well over the .17 limit when he was tested around 9.30am on Sunday while returning to Melbourne.

King had spent the night in Geelong following the practice match against the Cats at Simonds Stadium.

The Bulldogs have fined King $5000 and he will do community service, as well as undergo counselling.

King's fine will be donated to the Road Trauma Support Services Victoria organisation.

"There are absolutely no excuses for my actions - it was stupid and completely irresponsible," King said in a club statement.

"I am extremely disappointed with myself and want to sincerely apologise to everyone I have let down and hurt - especially the club and my family."

Bulldogs chief executive Simon Garlick said the club was bitterly disappointed.

"While we know that Steven is gutted by the incident, there is no excuse for this behaviour," he said.

"Our players and staff all participate in education highlighting the importance of the responsible use of alcohol."

King, who played in Geelong's 2007 premiership team, joined the Bulldogs this year after working as an assistant coach at St Kilda.

The ruckman played 240 AFL games for Geelong and St Kilda and captained the Cats for four seasons.